Hello ex-_-xe, thanks for getting in touch and welcome to the forum.
Are you trying to connect a Steam or Epic account, or are do you only play on Ubisoft Connect?
If so, you may see tis error as you may have 2 Ubisoft accounts, one connected to your Xbox and one connected to your PC.
If you are trying to link the two together, the best thing to do would be to contact us over one of these links privately, with your Ubisoft username
, any emails that you may have used in the past for Ubisoft games
and your Xbox Gamertag
, then we can check what accounts you have and see if we are able to link them for you >
Twitter Support - https://twitter.com/UbisoftSupport
Facebook Support - https://www.facebook.com/UbisoftSupportUK/
Ubisoft Support Website - https://www.ubisoft.com/help